Velleman DVM990BL Operating Manual Download | Manualshive

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DVM990BL

DIGITAL

MULTIMETER

MULTIMETRE

DIGITAL

OPERATING

MANUAL MANUEL

D’UTILISATION

DIGITALE

MULTIMETER

DIGITALES

MULTIMETER

BEDIENINGSHANDLEIDING

BEDIENUNGSANLEITUNG

MULTÍMETRO DÍGITAL
MANUAL DEL USUARIO

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Summary of Contents for DVM990BL

Page 1: ...M990BL DIGITAL MULTIMETER MULTIMETRE DIGITAL OPERATING MANUAL MANUEL D UTILISATION DIGITALE MULTIMETER DIGITALES MULTIMETER BEDIENINGSHANDLEIDING BEDIENUNGSANLEITUNG MULTÍMETRO DÍGITAL MANUAL DEL USUARIO ...

Page 2: ... harsh storage or shipping conditions immediately inspect the meter and confirm its condition 1 1 4 Test leads must be in good condition Before using check that the test lead insulation is not damaged and or the lead wire is not exposed 1 1 5 Full compliance with safety standards can only be guaranteed if used with the test leads supplied If necessary they must be replaced with leads of the same t...

Page 3: ... Do not store or use the meter in areas exposed to direct sunlight high temperature humidity or condensation 1 3 SYMBOLS Important safety information refer to the operating manual Dangerous voltage may be present Double insulation Protection Class II Earth 1 4 MAINTENANCE 1 4 1 Do not attempt to adjust or repair the meter by removing the back of the casing while voltage is applied Only a technicia...

Page 4: ...VM990BL VELLEMAN 3 2 DESCRIPTION 2 1 NAMES OF COMPONENTS 1 LCD display 2 Power switch POWER 3 Black light switch 4 Data hold switch H 5 Rotary switch 6 Input socket 7 Case 8 Battery door 9 Brace 10 Screw ...

Page 5: ...sed to select the functions and the ranges 3 SPECIFICATIONS Accuracy is specified for a period of one year after calibration and at 18 C to 28 C 64 F to 82 F with relative humidity to 75 3 1 GENERAL SPECIFICATIONS 30 ranges of functions Over range protection for all ranges Operating altitude 2000m max Max voltage between terminals and earth 1000V DC or AC peak value Fuse protection F1 200mA 250V F...

Page 6: ...al because the meter is very sensitive When the test leads touch the circuit you get the true reading 3 2 21 AC Voltage Range Resolution Accuracy reading digits 200mV 0 1mV 1 2 of rdg 5 digits 2V 1mV 1 0 of rdg 5 digits 20V 10mV 1 0 of rdg 5 digits 200V 100mV 1 0 of rdg 5 digits 1000V 1V 1 2 of rdg 5 digits Input impedance 10 Mohm Overload protection 200mV range 250V DC or rms AC 2V 1000V ranges 1...

Page 7: ... of rdg 10 digits Overload protection 2mA to 200mA ranges F1 F 200mA 250V fuse 10A range F2 F 10A 250V fuse Max input current mA socket 200mA 10A socket 10A less than 15 seconds Voltage drop 200mV full range Frequency range 40 to 400Hz Test on 60Hz 50Hz Response average calibrated in rms of sine wave 3 2 5 Resistance Range Resolution Accuracy reading digits 200ohm 0 1ohm 1 0 of rdg 10 digits 2kohm...

Page 8: ...load Protection 250V DC or rms AC 3 2 7 Diode Range Resolution Function 1mV Display reads approximate forward voltage of diode Overload Protection 250V DC or rms AC Forward DC current approximate 1mA Reverse DC voltage approximate 2 8V 3 2 6 Continuity Range Function Built in buzzer will sound if resistance is less than 70 ohms Overload Protection 250V DC or rms AC Open circuit voltage approximate...

Page 9: ... of the back light will shorten the battery life It is better not to use the back light when not necessary 2 When the battery voltage is less than 7V it will display However when using the back light at the same time may appear even if the battery voltage is more than 7V because the operating current is higher and the voltage will fall You do not need to replace the battery if this happens In norm...

Page 10: ...higher voltage but it may destroy the interior circuit 4 Be careful to avoid electric shocks when measuring high voltages 4 5 MEASURING CURRENT 4 5 1 Connect the black test lead to the COM socket and the red test lead to the mA socket for a maximum of 200mA current For a maximum of 10A move the red lead to the 10A socket 4 5 2 Set the rotary switch to the desired A or A range 4 5 3 Connect the tes...

Page 11: ... discharged 5 At 200 MΩ range the display reading is around 10 1 MΩ when the test leads are shorted This has to be subtracted from the measured results For example when measuring 100 MΩ resistance the display reading will be 101 0 and the correct result should be 101 0 1 0 100 0 MΩ 4 7 MEASURING CAPACITANCE 4 7 1 Connect the black test lead to the COM socket and the red test lead to the V Ω socket...

Page 12: ...be measured 4 8 4 You can see the reading on the LCD 4 9 MEASURING FREQUENCY 4 9 1 Connect the black test lead to the COM socket and the red test lead to the V Ω socket 4 9 2 Set the rotary switch to the desired 20kHz range position 4 9 3 Connect the test leads across the source or load under test 4 9 4 You can see the reading on the LCD NOTE 1 Readings can be done at input voltages above 10Vrms b...

Page 13: ...there is continuity i e resistance less than about 70Ω the built in buzzer will sound NOTE If the input is open circuit the figure 1 will be displayed 5 MAINTENANCE WARNING Before attempting to remove the battery door or open the case be sure that the test leads have been disconnected from the circuit under test in order to avoid electric shock hazard 5 1 BATTERY REPLACEMENT 5 1 1 If the indicator...

Page 14: ...LEAD REPLACEMENT WARNING Full compliance with safety standards can only be guaranteed if used with the test leads supplied If necessary they must be replaced with leads of the same type or ones with the same electrical ratings Electrical ratings of the test leads 1000V 10A The test leads must be replaced if bare wire is exposed 5 4 HOW TO USE THE BRACE 5 4 1 When the meter is not in use attach the...

Page 15: ...RIES 6 1 SUPPLIED WITH THE MULTIMETER test leads 9V battery type 6F22 or NEDA 1604 fuse F1 200mA 250V Ø5 x 20mm fuse F2 10A 250V Ø5 x 20mm K type thermocouple operating manual 6 2 OPTIONAL ACCESSORIES capacitance test socket holster ...

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